Ordering RecommendationRecommendations when to order or not order the test. May include related or preferred tests.
Aids in the evaluation of suspected hypogonadism in men with a total testosterone level at the lower limit of the normal range. Not recommended for use in women and children.
MnemonicUnique test identifier.
FREE T
MethodologyProcess(es) used to perform the test.
Quantitative Electrochemiluminescent Immunoassay The concentration of free testosterone is derived from a mathematical expression based on the constant for the binding of testosterone to sex hormone binding globulin.
PerformedDays of the week the test is performed.
Sun-Sat
ReportedExpected turnaround time for a result, beginning when ARUP has received the specimen.
Within 24 hours
New York DOH Approval StatusIndicates test has been approved by the New York State Department of Health.
This test is New York DOH approved.
Specimen Required
Patient Preparation
Collect specimen between 6-10 a.m.
Collect
Serum separator tube or green (lithium heparin).
Specimen Preparation
Separate serum or plasma from cells immediately after collection. Transfer 1 mL serum or plasma to an ARUP Standard Transport Tube. (Min: 0.6 mL)
Storage/Transport Temperature
Refrigerated.
Unacceptable Conditions
EDTA plasma.
Remarks
Stability
After separation from cells: Ambient: 48 hours; Refrigerated: 1 week; Frozen: 2 months
Reference IntervalNormal range/expected value(s) for a specific disease state. May also include abnormal ranges.
Interpretive DataBackground information for test. May include disease information, patient result explanation, recommendations, details of testing, associated diseases, explanation of possible patient results.
The concentration of free testosterone is derived from a mathematical expression based on the constant for the binding of testosterone to sex hormone binding globulin.
Compliance Category
FDA
NoteAdditional information related to the test.
Please refer to individual components for stability of sample for this test. This test is not recommended for females or children. For testing on females or children refer to Testosterone, Free & Total, (Includes Sex Hormone Binding Globulin), Females and Children (0081056).
CPT CodesThe American Medical Association Current Procedural Terminology (CPT) codes published in ARUP's Laboratory Test Directory are provided for informational purposes only. The codes reflect our interpretation of CPT coding requirements based upon AMA guidelines published annually. CPT codes are provided only as guidance to assist clients with billing. ARUP strongly recommends that clients confirm CPT codes with their Medicare administrative contractor, as requirements may differ. CPT coding is the sole responsibility of the billing party. ARUP Laboratories assumes no responsibility for billing errors due to reliance on the CPT codes published.
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
AliasesOther names that describe the test. Synonyms.
Free Testosterone
Male testosterone testing
SHBG
Total Testosterone
Testosterone, Free and Total (Includes Sex Hormone Binding Globulin), Adult Male
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